What is pronoun for a house?

The personal pronoun for house is it.

The possessive pronoun/possessive adjective is its (no apostrophe).

The reflexive/intensive pronoun is itself.

Examples:

My house is on the corner. It has a red door. (personal pronoun)

My house is on the corner, its door is red. (possessive adjective)

The house itself sits on a corner. (intensive pronoun)